| Animals by Skeleton Image | 0 | - | 4.81 | 46,508 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,826 |
| Empires by Maps | 0 | - | 4.98 | 120,505 |
| Merged Company Logos #1 | 0 | - | 4.90 | 106,541 |
| Elements by Picture | 0 | - | 4.27 | 69,971 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.48 | 29,331 |
| Islands by Shape #2 | 0 | - | 4.88 | 59,283 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,862 |
| Visual Memory Test - Random Cartoons | 0 | - | 4.98 | 104,382 |
| Play-Doh People from History | 0 | - | 4.99 | 94,810 |
| Circular Cutouts from a World Map | 0 | - | 4.98 | 61,627 |
| All Country Flags of the World | 0 | - | 5.00 | 3,665,496 |
| Metals of Antiquity | 0 | - | 4.95 | 93,443 |
| Years in History by Picture | 0 | - | 4.44 | 35,526 |
| Famous Foreheads #1 | 0 | - | 4.47 | 74,934 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,537,445 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,045 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,512 |
| Name that Object #1 | 0 | - | 3.57 | 96,506 |
| Make a Stained Glass Window | 0 | - | 4.99 | 68,530 |
| Flags with Crescents | 0 | - | 4.98 | 169,630 |
| Country Flag Trivia | 0 | - | 4.81 | 57,074 |
| Country Flags with Eagles - Picture Quiz | 0 | - | 4.98 | 103,810 |
| Country Flags with the Union Jack | 0 | - | 4.87 | 77,536 |
| Pixelated Flag Quiz | 0 | - | 4.97 | 87,468 |
| Flag Emblems Scavenger Hunt | 0 | - | 5.00 | 67,292 |
| Flags by Horizontal Stripes #1 | 0 | - | 4.84 | 85,255 |
| Country Flags with the Sun - Picture Quiz | 0 | - | 4.83 | 52,836 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 180,645 |
| National Football Team Logos | 0 | - | 4.85 | 180,416 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,718 |
| Old Movies by Picture | 0 | - | 4.51 | 25,103 |
| Musical Instruments by Picture #2 | 0 | - | 4.24 | 47,042 |
| Random Logos Quiz | 0 | - | 4.31 | 208,482 |
| Pictures by Letter - A | 0 | - | 4.17 | 33,445 |
| Pictures by Letter - J | 0 | - | 4.31 | 40,059 |
| Pictures by Letter - B | 0 | - | 4.31 | 43,998 |
| Pictures by Letter - D | 0 | - | 4.13 | 37,607 |
| Pictures by Letter - M | 0 | - | 4.24 | 37,822 |
| The Voyage of Darwin - Animated Map Quiz | 0 | - | 4.99 | 14,484 |
| Fruits by Picture | 0 | - | 4.19 | 807,353 |
| Geography by Picture - B | 0 | - | 4.42 | 55,613 |
| Geography by Picture - H | 0 | - | 4.50 | 58,240 |
| Geography by Picture - N | 0 | - | 4.45 | 42,209 |
| Geography by Picture - R | 0 | - | 4.56 | 41,032 |
| Geography by Picture - T | 0 | - | 4.54 | 57,851 |
| Flags to Languages | 0 | - | 4.95 | 173,662 |
| All North American Pro Sports Logos | 0 | - | 4.70 | 115,146 |
| Similar Country Flags - Multiple Choice Quiz | 0 | - | 4.94 | 50,547 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,285 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,661 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,560 |
| Countries with Glaciers | 0 | - | 4.97 | 105,426 |
| Three Real and One Fake - Country Flags | 0 | - | 4.97 | 84,126 |
| Name that Object #2 | 0 | - | 3.64 | 15,452 |
| Name that Object #3 | 0 | - | 3.93 | 14,406 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,426 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 337,619 |
| Name the Pixelated Landmark | 0 | - | 4.85 | 63,029 |
| Car Logos Quiz #1 | 0 | - | 4.45 | 539,246 |
| Pictures by Letter - E | 0 | - | 3.49 | 34,510 |
| Pictures by Letter - G | 0 | - | 4.14 | 28,188 |
| Pictures by Letter - L | 0 | - | 4.14 | 30,587 |
| Pictures by Letter - F | 0 | - | 4.17 | 29,071 |
| Pictures by Letter - Z | 0 | - | 4.05 | 23,476 |
| Pictures by Letter - Y | 0 | - | 4.21 | 26,323 |
| Pictures by Letter - R | 0 | - | 4.05 | 24,788 |
| Pictures by Letter - K | 0 | - | 4.18 | 25,145 |
| Pictures by Letter - I | 0 | - | 4.16 | 30,409 |
| Pictures by Letter - N | 0 | - | 4.11 | 24,514 |
| Pictures by Letter - P | 0 | - | 4.05 | 26,076 |
| Pictures by Letter - U | 0 | - | 4.10 | 20,802 |
| Pictures by Letter - T | 0 | - | 4.34 | 27,712 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,948 |
| Name that Bug | 0 | - | 4.12 | 45,564 |
| Islands by Shape #1 | 0 | - | 4.32 | 84,374 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,973 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,712 |
| Islands by Picture | 0 | - | 4.28 | 107,004 |
| Classic Movies by Movie Posters | 0 | - | 4.45 | 24,274 |
| Animals by Close-up Image | 0 | - | 4.42 | 217,895 |
| Aquatic Mammals by Picture | 0 | - | 4.41 | 45,652 |
| Extinct Animals by Picture | 0 | - | 4.49 | 35,239 |
| Mammals by Picture #1 | 0 | - | 4.70 | 91,840 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,031 |
| International Footballers by Picture | 0 | - | 4.50 | 55,647 |
| Name that Historical Figure #2 | 0 | - | 4.42 | 284,632 |
| Name that Historical Figure #5 | 0 | - | 4.43 | 107,716 |
| Name that Historical Figure #7 - U.S. Edition | 0 | - | 4.51 | 50,827 |
| Geography by Picture - A | 0 | - | 4.39 | 60,267 |
| Geography by Picture - D | 0 | - | 4.15 | 45,668 |
| Geography by Picture - F | 0 | - | 4.31 | 51,014 |
| Geography by Picture - G | 0 | - | 4.38 | 47,956 |
| Geography by Picture - J | 0 | - | 4.16 | 38,473 |
| Geography by Picture - K | 0 | - | 4.29 | 33,135 |
| Geography by Picture - C | 0 | - | 4.31 | 57,081 |
| Geography by Picture - L | 0 | - | 4.37 | 58,976 |
| Geography by Picture - M | 0 | - | 4.14 | 40,471 |
| Geography by Picture - P | 0 | - | 4.24 | 42,444 |
| Geography by Picture - S | 0 | - | 4.38 | 47,047 |
| Miscellaneous Flags Quiz | 0 | - | 4.42 | 280,523 |
| Flag Maths | 0 | - | 4.64 | 57,763 |
| Satellite Images #1 | 0 | - | 4.47 | 129,392 |
| Satellite Images Quiz #2 | 0 | - | 4.63 | 109,320 |
| Satellite Images Quiz #4 | 0 | - | 4.55 | 88,929 |
| Satellite Images Quiz #5 | 0 | - | 4.52 | 49,941 |
| Satellite Images Quiz #6 | 0 | - | 4.50 | 38,997 |
| Cities by Picture #1 | 0 | - | 4.73 | 86,026 |
| Soccer Team Logos | 0 | - | 4.26 | 374,635 |
| Car Logos Quiz #2 | 0 | - | 4.43 | 262,047 |
| Video Game Logos Quiz | 0 | - | 4.40 | 184,053 |
| Movie Logos | 0 | - | 4.33 | 238,539 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,370 |
| History by Picture - A | 0 | - | 4.26 | 45,831 |
| History by Picture - B | 0 | - | 4.40 | 49,012 |
| History by Picture - C | 0 | - | 4.36 | 54,527 |
| History by Picture - F | 0 | - | 4.35 | 37,919 |
| History by Picture - G | 0 | - | 4.40 | 42,174 |
| History by Picture - D | 0 | - | 4.29 | 44,344 |
| History by Picture - E | 0 | - | 4.25 | 43,962 |
| History by Picture - H | 0 | - | 4.37 | 36,825 |
| History by Picture - K | 0 | - | 4.35 | 33,384 |
| History by Picture - M | 0 | - | 4.17 | 36,178 |
| History by Picture - N | 0 | - | 4.40 | 41,295 |
| History by Picture - O | 0 | - | 4.39 | 36,347 |
| History by Picture - T | 0 | - | 4.20 | 33,339 |
| Name that Nut, Seed, or Bean | 0 | - | 4.63 | 57,312 |
| Animals - Taxonomy to Common Name | 0 | - | 4.80 | 28,290 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,451 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,299 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,671 |
| 1980s Movie Silhouettes | 0 | - | 4.97 | 103,849 |
| Country Flags Multiple Choice | 0 | - | 4.97 | 144,587 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,423,406 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,138 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,341 |
| Musical Instruments by Picture #1 | 0 | - | 4.52 | 268,971 |
| Foods by Picture | 0 | - | 3.81 | 226,130 |
| Flowers by Picture | 0 | - | 4.46 | 105,659 |
| Junk Foods by Picture | 0 | - | 3.69 | 96,400 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,747 |
| Christmas by Picture | 0 | - | 4.26 | 28,176 |
| Hats by Picture | 0 | - | 4.21 | 17,968 |
| Weapons by Picture | 0 | - | 4.13 | 21,061 |
| Cars by Picture | 0 | - | 3.89 | 41,526 |
| Reptile Picture Quiz | 0 | - | 4.32 | 14,301 |
| Authors by Picture | 0 | - | 4.48 | 25,539 |
| Plants by Picture | 0 | - | 4.24 | 14,448 |
| Fruit and Vegetable Emojis | 0 | - | 4.44 | 89,716 |
| WWII Figures by Picture | 0 | - | 4.89 | 65,539 |
| College Sports Logos Quiz #3 | 0 | - | 4.30 | 55,795 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 66,012 |
| Songs by Picture Quiz #2 | 0 | - | 4.42 | 58,892 |
| Fish by Picture #1 | 0 | - | 4.41 | 108,551 |
| Animals A-Z by Picture | 0 | - | 4.08 | 66,473 |
| Mammals by Picture #3 | 0 | - | 4.39 | 62,131 |
| Mammals by Picture #4 | 0 | - | 4.03 | 34,140 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,656 |
| Mammals by Picture #2 | 0 | - | 4.28 | 58,254 |
| Oscar Nominated Actors by Picture #1 | 0 | - | 4.42 | 165,198 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,443 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,443 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,199 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,745 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 79,455 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,458 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 95,604 |
| Women in History by Picture | 0 | - | 4.25 | 25,927 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,174 |
| Famous Foreheads #2 | 0 | - | 3.17 | 15,782 |
| Name that Historical Figure #3 | 0 | - | 4.36 | 239,425 |
| Name that Historical Figure #4 | 0 | - | 4.29 | 159,184 |
| Name that Historical Figure #6 | 0 | - | 4.26 | 93,343 |
| Musicians by Picture #1 | 0 | - | 4.37 | 108,833 |
| Musicians by Picture #2 | 0 | - | 4.29 | 76,477 |
| Musicians by Picture #4 | 0 | - | 4.07 | 64,936 |
| Musicians by Picture #3 | 0 | - | 4.10 | 59,017 |
| Geography by Picture - E | 0 | - | 3.55 | 47,390 |
| Landforms by Picture | 0 | - | 4.31 | 20,684 |
| Geography by Picture - I | 0 | - | 4.00 | 39,439 |
| Geography by Picture - O | 0 | - | 4.01 | 28,146 |
| Emoji Flags | 0 | - | 4.35 | 44,102 |
| Fill the Map of Europe by Guessing Flag Colors | 0 | - | 4.67 | 37,877 |
| Languages by Combined Flags | 0 | - | 4.53 | 100,034 |
| Satellite Images Quiz #3 | 0 | - | 4.35 | 73,409 |
| Satellite Images - Island Chains | 0 | - | 4.43 | 66,445 |
| Islands by Satellite Image #1 | 0 | - | 4.70 | 70,765 |
| Peninsulas by Satellite Image | 0 | - | 4.53 | 27,815 |
| Landmarks Picture Quiz #1 | 0 | - | 4.16 | 394,569 |
| Airline Logos | 0 | - | 4.45 | 140,750 |
| Fast Food Logos Quiz | 0 | - | 4.45 | 248,428 |
| Mostly-American Candy Logos | 0 | - | 4.14 | 159,088 |
| Brand Logos That Start With M | 0 | - | 4.40 | 62,891 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,659 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,038 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,591 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,201 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,697 |
| Pictures by Letter - H | 0 | - | 3.97 | 30,509 |
| Pictures by Letter - C | 0 | - | 3.99 | 30,239 |
